Trimmer



R. A. RUTH June 12, 1945.

TRIMMER Filed July 7, 1944 ROGER A.RUTH

I NTOR BY v f ORNEYS Patented June 12, 1945,

UNITED .STATES PATENT OFFICE TRIMMER. Roger A. Ruth, Rochester, N. Y., assignorto Eastman' Kodak Company, Rochester, N. Y., a. corporation of New Jersey Application July 7, 1944, Serial No. 543,834

7 Claims.

means for measuring the size of the material" .'being trimmed. It is often necessary, however,

to trim such materials in a darkroom, either in total darkness or in a portion of the darkroom which is dimly or inadequately lighted. As will be readily apparent to those having even the most meager experience in darkrooms, the usual trimmers provided with a. wood or Celluloid scale are entirely unsuited for such use. However in order to permit such trimming to be done under such restricted light conditions, the present invention provides a trimmer having a scale or ruler which is illuminated with a suitable nonaotinic light so that the scale may be readily visible even in total darkness. The illumination of the scale is, however, such as not to affect the sensitized material being worked on.

The present invention has, .therefore, as its principalobiect, the provision of a scale member or light transmitting material which is lighted by a non-actinic light source which illuminates the scale for its full length so as to be readily visible in a darkroom. 7

Still another object of the invention is the provision of a filter member adapted to be used in connection with a light source so that the light which illuminates the scale member is oi the type required for the particular material being handled.

And a further object of the invention is the provision of an illuminated scale, which is simple in construction, inexpensive, rugged, and highly effective in use. a

To these and other ends, the invention resides in certain improvements and combinations of parts, all as will be hereinafter more fully described, the novel features being pointed out in the claims at the end of the specification.

,In the drawing:

Fig. 1 is a perspective view of atrimmer showing the relation thereto of a scale and illuminating means constructed in accordance with the preferred embodiment of the invention;

Fig. 3 is a partial sectional view through the trimmer and taken substantially in line 2-2 of Fig. 1, showing the relation of the scale and the lighting means therefore; and

Fig. 3 is a rear view of a portion of the trimmerillustrated in Fig. 1 showing the relation of the filter receiving slot to the scale and light source.

The trimmer of the present invention comprises a body portion ll formed of wood or other similar material on which the material to be trimmed may be placed in the usual and well-known manner. The upper surface II of the p'ortion II is provided with a series of lines l3 arranged at right angles for properly aligning the edges of the material during the trimming operation. A knife It is'arranged along one side I5 of the portion ll and is connected to the latter by means of a-pintle I 6 ecured to the upper or rear edge I 1. The trimmer so far described is of a standard andwellknown construction and does not constitute a part of the present invention.

A scale member 20 of suitable length and of the shape best shown in Fig. 2 is arranged along the edge I1 and is secured thereto by means of brackets 3|. The scale is formed of any suitable transparent or translucent light-transmitting material, such as lucite which is etched, printed,

or otherwise formed to provide numerals 2|, spaced in accordance with the lines l2. These numerals may be spaced to represent inches or any other suitable dimension. An edge 22 is provided against which the material to be trimmed may abut, in the usual well-known manner.

In order that the scale member 2B'may be used in a darkroom for trimming photographic paper or film, it is necessary that the member be suitably lighted or illuminated so that the numerals 2| will be readily visible. In the preferred arrangement, the scale member 20 is edge lighted by means of a light source 23 positioned on the edge 24 of the body portion l and in alignment with the .scale member 20, as illustrated inthe drawing. The light source is connected by a sultablecord 25, to a source of electric current not shown, and a switch 26 may be provided for turning the light on and oil. The light 23 is preferably positioned in a housing 21 secured to the end 24 of the body portion and the switch 26 may be mounted on this housing.

It will nowbe apparent that the light source 23 will-supply light to the left end of the scale member 20. This light will be transmitted along the member to illuminate the scale to make the various numerals 2| readily visible thereon. The light supplied to the scale member should be of sufllcient intensity to illuminate the scale for the full length thereof so that the numerals will be readily visible, yet should be of a spectral quality such as not to aflect the sensitized material being used. For thisreason,non-actinielightiss plied to the scale'member.

Such non-actinic, light may be secured by means or a light source 28 itself, in wbichcase the lamp must be a color suitable for the particular material being trimmed. In the preferred arrangement, however, an ordinary white light source I! is Provided. This light is then altered bei'ore'it is supplied to the end or the scale member '20. This alteration may be secured by means of a suitably colored filter 20 which may be inserted in a slot ll formed in the lamphouse 2] and positioned between the light source II and the left end of the scale member II, as will be readily apparent from an inspection of Fig. 8. By properly selecting the filter 28 any desired spectral quality or non-actinic, white, or other colored light, may be supplied to the scale member 20 to illuminate the latter so that the numeral 2| may be visible. The particular filter used should be such that the light illuminating the scale member will be safe for the particular type of sensitized material being handled. For convenience, the filter 28 may be formed of two members of different colors so that by merely reversing the fllter two different non-actinic 1 or said portion, 0! an elongated scale member lights may be secured. Various other filters may be provided, and by inserting the proper filter in the slot III, the scale 20 may be readily illuminated without eflecting the sensitized material being trimmed. I

By means of the above-described arrangement, the scale member may be suitably illuminated so as to be readily visible in adarkroom or in a dimly lighted section thereof and the particular color of the illuminating light may be selected to suit the material being operated up n, vantages of which are readily apparent.

While one embodiment of the invention has been disclosed, it is to be understood that the inventive idea may be carried out in a number oi ways. This application is, therefore, not to be limited to the precise details described but is intended to cover all variations and modifications thereof falling within the scope of the appended claims.

I claim:

1. In a trimmer, the combination with a body portion, trimming means arranged along one edge of said portion of a scale member formed of light transmitting material positioned along another edge of said portion, and means for applying nonactinic light to illuminate said member.

2. In a trimmer, the combination with a body I portion, trimming means arranged along one edge the adedge 'of said formed or light transmitting material positioned along another edge of said portion, and means adapted to apply non-actinic light to said member for transmission therealong to illuminate said scale-member.

3. In a trimmer the combination with a body portion, trimming means arranged along one edge of said portion, formed or transparent material and positioned at one end oi said portion, and means for applying light at an end or said member for transmission therealong to illuminate said scale for the full length thereof.

4. In a trimmer, the combination with a body portion, trimming means arranged along one edge of said portion, of a scale member formed of light transmitting material positioned along another edge of said portion, and means for applying a non-actinic light to one end 01' said member for transmission therealong to illuminate said scale.

5. In a trimmer, the combination with a body portion, trimming means arranged along one edge of said portion, or a flat elongated scale member formed of transparent material and poliitioned along another edge of said portion, and a nonactinic light source positioned at one end of said member for supplying non-actinic light to said member for transmission along said member to illuminate the latter.

6. In a trimmer, the combination with a body portion, trimming means arranged along one edge of said portion, of a scale member formed 01 light transmitting material positioned along another edge oi' said portion, a light source positioned at one end of said scale member, and a filter positioned between said source and the end of said member to supply non-actinic light thereto which itse transmitted therealong to illuminate said mem- 7. In a trimmer, the combination with a body portion, trimming means arranged along one edge of said portion, or a scale member formed of light transmitting material arranged along another portion, a light source mounted on said portion and positioned to supply light to one end or said scale member, a housing for said light source, said housing being formed with a slot positioned intermediate said light source and said one end, and a filter removably positioned in said slot to supply non-actinic light to said scale member to illuminate the latter for the full length thereof.

. ROGER A. RUTH.

DISCLAIMER "2,378,249.Roge'r A. Ruth, Rochester, N. Y. TRIMMER. Patent filed June 11, 1947, by the assignee, Company; the inventor, aseenting.--

Hereby enters "this disclaimer to claims 1, 2,

1945. Disclaimer [Ofllcial Gazette July 15, 1947.]

dated June 12,: Eastman Kodalt 4, and 5 of said patent.

of a hat elongated scale member used. For thisreason,non-actinielightiss plied to the scale'member.

Such non-actinic, light may be secured by means or a light source 28 itself, in wbichcase the lamp must be a color suitable for the particular material being trimmed. In the preferred arrangement, however, an ordinary white light source I! is Provided. This light is then altered bei'ore'it is supplied to the end or the scale member '20. This alteration may be secured by means of a suitably colored filter 20 which may be inserted in a slot ll formed in the lamphouse 2] and positioned between the light source II and the left end of the scale member II, as will be readily apparent from an inspection of Fig. 8. By properly selecting the filter 28 any desired spectral quality or non-actinic, white, or other colored light, may be supplied to the scale member 20 to illuminate the latter so that the numeral 2| may be visible. The particular filter used should be such that the light illuminating the scale member will be safe for the particular type of sensitized material being handled. For convenience, the filter 28 may be formed of two members of different colors so that by merely reversing the fllter two different non-actinic 1 or said portion, 0! an elongated scale member lights may be secured. Various other filters may be provided, and by inserting the proper filter in the slot III, the scale 20 may be readily illuminated without eflecting the sensitized material being trimmed. I

By means of the above-described arrangement, the scale member may be suitably illuminated so as to be readily visible in adarkroom or in a dimly lighted section thereof and the particular color of the illuminating light may be selected to suit the material being operated up n, vantages of which are readily apparent.

While one embodiment of the invention has been disclosed, it is to be understood that the inventive idea may be carried out in a number oi ways. This application is, therefore, not to be limited to the precise details described but is intended to cover all variations and modifications thereof falling within the scope of the appended claims.

I claim:

1. In a trimmer, the combination with a body portion, trimming means arranged along one edge of said portion of a scale member formed of light transmitting material positioned along another edge of said portion, and means for applying nonactinic light to illuminate said member.

2. In a trimmer, the combination with a body I portion, trimming means arranged along one edge the adedge 'of said formed or light transmitting material positioned along another edge of said portion, and means adapted to apply non-actinic light to said member for transmission therealong to illuminate said scale-member.

3. In a trimmer the combination with a body portion, trimming means arranged along one edge of said portion, formed or transparent material and positioned at one end oi said portion, and means for applying light at an end or said member for transmission therealong to illuminate said scale for the full length thereof.

4. In a trimmer, the combination with a body portion, trimming means arranged along one edge of said portion, of a scale member formed of light transmitting material positioned along another edge of said portion, and means for applying a non-actinic light to one end 01' said member for transmission therealong to illuminate said scale.

5. In a trimmer, the combination with a body portion, trimming means arranged along one edge of said portion, or a flat elongated scale member formed of transparent material and poliitioned along another edge of said portion, and a nonactinic light source positioned at one end of said member for supplying non-actinic light to said member for transmission along said member to illuminate the latter.

6. In a trimmer, the combination with a body portion, trimming means arranged along one edge of said portion, of a scale member formed 01 light transmitting material positioned along another edge oi' said portion, a light source positioned at one end of said scale member, and a filter positioned between said source and the end of said member to supply non-actinic light thereto which itse transmitted therealong to illuminate said mem- 7. In a trimmer, the combination with a body portion, trimming means arranged along one edge of said portion, or a scale member formed of light transmitting material arranged along another portion, a light source mounted on said portion and positioned to supply light to one end or said scale member, a housing for said light source, said housing being formed with a slot positioned intermediate said light source and said one end, and a filter removably positioned in said slot to supply non-actinic light to said scale member to illuminate the latter for the full length thereof.

. ROGER A. RUTH.

DISCLAIMER "2,378,249.Roge'r A. Ruth, Rochester, N. Y. TRIMMER. Patent filed June 11, 1947, by the assignee, Company; the inventor, aseenting.--

Hereby enters "this disclaimer to claims 1, 2,

1945. Disclaimer [Ofllcial Gazette July 15, 1947.]

dated June 12,: Eastman Kodalt 4, and 5 of said patent.

of a hat elongated scale member 

